Discharge apparatus for lime kilns and the like



Sept. 4, 1923.

. P. DUMONT DISCHARGE APPARATUS FOR LIME KILNS AND THE LIKE 1 I 8 5? m wm r m a .5

M a fi\ w m h m. m f 22 i 4 V Patented Sept. 4, 1923. l fi PAUL DUMONT, OF AMPSIN, IBEL(Ii-IUlVI.

DISCHARGE APPARATUS FOR LIIME KILNS AND THE LIKE.

Application filed March 21, 1921. Serial No. 453,982.

To all whom it may concern: fall from the fixed platforms arranged be- Be it known that I, PAUL DUMoN'r, a subneath the hoppers are spread over the mov ject of the King of Belgium, and resident of able grid and on the lower platform Work- Ampsin, in the Kingdom of Belgium, have ing in conjunction with this grid.

5 invented certain new and useful Improve- The materials carried respectively by the ments in and Relating to Discharge Appagrid and the movable platform are removed ratus for Lime Kilns and the like; and I do by scrapers arranged so as to direct them on hereby declare the following to be a full, to travelling belts which convey themto any clear, and exact description of the invention, suitable points.

10 such as will enable others skilled in the art Referring now to the accompanying drawto which it appertains to make and use the ings in which an example of construction same, reference being had to the aCCOHlof the apparatus for carrying out the inven panying drawings and to letters or figures tion is illustrated of reference marked therein, which form a Fi 1 i a ti l ti th li 15 part of this specification. A-A of Fig. 2, showing the lower part of This invention relates to discharge appa the furnace or kiln and the respective posi ratus for lime kilns and the like. tions of the hoppers and the revolving bed or The invention has for its subject an apol paratus for the automatic and continuous Fi 2 i a ti on th li 13-13 f 20 discharging of materials which apparatus is Fig. 1 showing the revolving bed or sole.

arranged and constructed with a view to af Fig. 3 is a view in extended elevation of fording-the least possible resistance andto th di charging passage on the line CC of obtaining a regular descent of the material Fi 2,

in to the furnace in order to obtain a fin Fi 4 i a i -fl i ti n d 25 ished evenly roasted product. partly in perspective of the complete ar- This result may be obtained by arranging ra'ngement.

beneath the mouth of the discharging l OP- The furnace is provided at its lower part pers, platforms on which the material emergith di h i hoppers 2 Th hoppers ing from the hoppers rests, and above which rall r i f ll OPGHQCL Th fl 30 in the SpflCB COIIIPI'lSfifl between these Pliltthrough these hoppers of the material c0 1 forms and the lower edge of the hoppers, tained in the furnace is prevented by r i L bars may travel which push the material to ing platforms 7 beneath these hoppers at a the edge Of the Said platforms and fOIQQ ll) ertain distancefrom their lower edge The to overflow. The materia s Which f fTOm material rests onthese platforms and forms 35 the said floors may be removed by means of f the edge ofv the hoppers to the level of a suitable conveyor. the said platform mounds having a natural In a particularly advantageous form of Slope h a 3 construction of the inventiomthe material Th di h f th t i l f th OYGIfiOWS 'PIOD] the plilt'fOIl'IlS arranged beis eflf'ectpd by pushing a certain quantity neath the'hoppers under the action of rakf te i l t th b tt f th id l ting' bars, then falls on to a grate or grld forms by means of movable rakingbars 15. arranged beneath the bars, and this grate re- It i id t th t as th ki -h 15 tains the coa ser material and allows the move material situated beneath the hoppers finer material to passthrough and fall on a this material is replaced by material flow- 45 platform arranged beneath this grating. ing out of the hoppers and consequently de- The raking bars, the grid and the lower rived from the furnace. This material is platform are connected one with another and pushed to the edge of the platform 7 and may have a rotary movement impartedto falls on to a grid or grating 14 which re them in such a way that the materials which tains the coarser mater al and allows the For the purpose of effecting a continuous,

and regular spreading of the material falling on the grating 14 and the platform 12, the latter are made in the form of a circular ring and are adapted to be displaced in a.

circular gallery 1 arranged in the lower part of the furnace and underneath the ceiling from which the apertures of the hoppers dis charge. V

The removal of the spread-out material on the grating 14 is effected by means of a fixed scoop 16 arranged on the said grating 14 on which scoop the material spread out on the grate is disposited continuously.

The foremost portion of the material deposited on the scoop 16 is pushed to the extremitythereof by the subsequentportion of the material continuously brought by the grating and whence they are deposited on a travelling belt 21 which conveys them to the outside of the oven.

The regularity of transport by the travelling belt, of the material brought by the grating 1 on the scraper 16, is effected by utilizing for actuating the travelling belt 21 and the grating 14., a common mechanism comprising a horizontal shaft 23 on which are keyed the drum 24L driving the travelling belt, and'a bevelled pinion 25. This bevelled pinion 25 gears with a bevelled gearing 26 mounted on a vertical shaft 27 on which is keyed a gear 28 gearing with a rack 20 arranged on the periphery of the frame 11. This mechanism may be driven by means of suitable motor which drives a pulley 29 keyed on the end of the horizontal shaftQS,

Fine materials are removed from the platform 12 by a scraper 17 which may be combined with a travelling belt conveying these materials to any desired. point. lVith a view to regulating the discharge of the furnace, the bars 15 are fixed in the frame in such a way that their radial length may be varied whereby the I width of the section raked may be increased or diminished.

hat I claim is:

1. Discharge apparatus for furnaces com: prising discharging hoppers, platforms arranged un der said hoppers, movable bars for pushing the material at the edge thereof, a movable grid arranged beneath said platform allowing the finer material to pass through and retaining the coarser material and means for connecting the grid with the movable bars so that they may be displaced simultaneously.

2. Discharge apparatus for furnaces comprising discharging hoppers, platforms arranged undersaid hoppers movable bars for pushing the material at the edge thereof, a movable grid arranged beneath said platferms allowing the finer material to pass through and retaining the coarser material and a movable support on which the said grid and the said bars are fixed.

3. Discharge apparatus for furnaces comprising discharging hoppers, platforms arranged under said hoppers. movable bars for pushing the material at the edge thereof, a movable grid arranged beneatli said plat forms allowing the finer material to pass through and retaining the coarser material and a fixed scraper arranged over the mov-' able grid for removing the material from the said grid.

1. Discharge apparatus for furnaces com prising discharging hoppers, platforms arranged under said hoppers, movable bars for pushing the material at the edge thereof, a movable grid arranged beneath said platforms allowing the finer material to pass through and retaining the coarser material, a movable plate under this grid to re ceive the finer material and fixed scrapers arranged above said grid and plate for removing respectively the coarser and the finer material.

5. Discharge apparatus for furnaces comprising a plurality of circumferentially arranged dis -harginc: hoppers, platforms arranged under said .hoppers, a movable crown disposed beneath them and carrying bars for pushing the material to'the edge of said platforms. a grid for retaining the coarser material falling from the platform, and a plate receiving the fine material which passes through said grid.

6. A discharge apparatus for furnaces comprising a plurality of stationary, spaced discharge hoppers. a fixed platform spaced below each. of said hopnersto receive the material therefrom, a plurality of bars arranged at spaced intervals substantially equal to the length of said platforms, said bars mounted for movementalong the upper face of said platforms for pushing the 'ma- 'terial thereon to the edge of the platforms, a mo able grid arranged beneath said platforms to retain the coarser material while allowing the finer material to fall through, and means forv connecting the grid with the movable bars'tocause said bars and grid to move in unison;

7. Discharge apparatus for furnaces comprising discharging hoppers, v platforms arranged under said hoppers, movable" bars for pushing the material at the edge thereof, and means interconnecting said bars, grid a movable grid arranged beneath said platand plate.

forms allowing the finer material to pass In testimony whereof I affix my signature through and retaining the coarser material, in presence of two Witnesses.

B a movable plate under this grid to receive PAUL DUMONT.

the finer material, fixed scrapers arranged Witnesses: above said grid and plate for removing re- ALFRED VANnnR HAUGEEY, spectively the coarser and finer material, LEONARD LERA. 

